1220332810 has 8 divisors (see below), whose sum is σ = 2196599076. Its totient is φ = 488133120.

The previous prime is 1220332801. The next prime is 1220332849. The reversal of 1220332810 is 182330221.

It can be written as a sum of positive squares in 2 ways, for example, as 1121111289 + 99221521 = 33483^2 + 9961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1220332810² = 2978424334324992200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61016631 + ... + 61016650.

Almost surely, 2^1220332810 is an apocalyptic number.

1220332810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220332810 is a deficient number, since it is larger than the sum of its proper divisors (976266266).

1220332810 is a wasteful number, since it uses less digits than its factorization.

1220332810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122033288.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1220332810 is about 34933.2622295714. The cubic root of 1220332810 is about 1068.6268845334.

The spelling of 1220332810 in words is "one billion, two hundred twenty million, three hundred thirty-two thousand, eight hundred ten".